APA (7th ed.) Citation

Dean, G. M. Agent Nine and the Jewel Mystery: A Story of Thrilling Exploits of the "G" Men.

Chicago Style (17th ed.) Citation

Dean, Graham M. Agent Nine and the Jewel Mystery: A Story of Thrilling Exploits of the "G" Men.

MLA (9th ed.) Citation

Dean, Graham M. Agent Nine and the Jewel Mystery: A Story of Thrilling Exploits of the "G" Men.

Warning: These citations may not always be 100% accurate.